{"action":"Upgrade thunderbird to 1:140.17.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.17.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.17.0esr-1~deb12u1"],"id":"tcs_01M5NPMCP9G57EHKPHD53143Q7","modified_at":"2026-10-23T17:47:50.349915209Z","published_at":"2026-09-30T18:18:18.120Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-103500","https://security-tracker.debian.org/tracker/CVE-2026-103500"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-103500","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-103500"}],"summary":"An attacker could cause a heap buffer overflow by getting a user to open an email that is greater than or equal to 2GB in size. This vulnerability was fixed in Thunderbird 157, Thunderbird 140.17, and"}